2139494 has 8 divisors (see below), whose sum is σ = 3667728. Its totient is φ = 916920.

The previous prime is 2139493. The next prime is 2139497. The reversal of 2139494 is 4949312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 3¹³ + 9⁴ + 4⁵ + 9⁶ + 4⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 2139494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76397 + ... + 76424.

It is an arithmetic number, because the mean of its divisors is an integer number (458466).

2^2139494 is an apocalyptic number.

2139494 is a deficient number, since it is larger than the sum of its proper divisors (1528234).

2139494 is a wasteful number, since it uses less digits than its factorization.

2139494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152830.

The product of its digits is 7776, while the sum is 32.

The square root of 2139494 is about 1462.7009263688. The cubic root of 2139494 is about 128.8557167352.

The spelling of 2139494 in words is "two million, one hundred thirty-nine thousand, four hundred ninety-four".